Valve



Filed June 25. 1943 3 sheets-sheet 1 VALVE Filed June 25, 1945 s sheets-sheet 2 IRA MORGAN 'W ITE.. hmm A? March 4, 1947.

l. M. WHITE VALVE Filed June 25. 1943 3 sheets-sheet s /N VEN Ta/P Patented Mar. 4, r1947 VALVE Ira Morgan White, Oakland,V Calif., assignor to The Pelton VWater Wheel Company, San Francisco, Calif., a corporation of California Application June 25, 1943, Serial No; 492,278

The invention relates to valves for insertion in pipe lines to control the flow of water therethrough. The invention relates further to a sleeve type valve through which, when in full open position, the water will pass with a minimum loss of head.

An object of the invention is to provide a valve for a heavy duty pipe line which may be taken down to remove the working parts of the valve Without taking down any portion of the pipe line.

Another object of the invention is to provide a valve for a heavy duty pipe line in which the heavy valve body remains in the line when it is desired to remove the working parts of the valve.

A further object of the invention is to provide a sleeve valve, the working parts of which may be collapsed for ready removal from the valve body.

The invention possesses other advantageous features, some of which with the foregoing will be set forth at length in the followingv description where I shall outline in full that form of the invention which I have selected for illus- 9 claims. (C1. 137-139) A which cooperates with a streamlined plug,

tration in the drawings accompanying and form- Fig. 2 is a cross section of a modified form of l' sleeve valve shown in Fig. 3, the section being taken on the line 2 2, Fig. 3.

Fig. 3 is a longitudinal section through a modied form of sleeve valve embodying my invention.

Fig. 4 is a perspective view of the valve body, or cradle, which is designed to be permanently xed in the pipe line and into which and from which the working parts of the valve are readily inserted or removed.V

In valves in large pipe -lines through which Water usually flows at a relatively high velocity and under very high pressure, it is of major importance that when the valve is in full open position that the water flows through the valve with the minimum of resistance and the minimum of disturbance. This is preferably accomplished by providing a valve which when in full open position, provides a water ow area of the same magnitude in cross section as the water owl area in the adjacent portions of the pipe line, and in which valve, the direction of flow ofthe Water is interfered with tov a minimum degree. This. is preferably accomplished by means of asleevevalve having a bulging body the contour of the body and the plug being such that the water flows past the plug with a minimumof disturbance and with a minimum variation in Velocity. These valves are subject to wear, primarily due to corrosion or the presence of solid matter in the water stream and consequently must be removed from the pipe line at intervals for the purpose of inspection, repair or replacement. In pipe lines of large diameter, par ticularly lines carrying water under high pressure and moving at high velocity, the removal of the valve presents a problem, due to the fact that the pipe line is held rigid in heavy foundation and cannot be readily taken down to permit the removal of the valve. Further, valves of this type are of very heavy construction and sometimes of great weight and the removal of the heavy valve often requires the use of special rigging which is not available at the site.

In accordance with my invention I provide a sleeve valve, the working and wearable parts y tween the yflanges or fixed abutments between v which it is installed. These flanges or abut-` ments, which form part of the valvebody, re-` main in the pipe line and since the body con-v stitutes a large percentage ofthe total weight of the valve, this construction, in which the valveV body remains in the line, greatly reduces they weight` to be handled when it becomes necessary or desirable to remove the valve from the line for inspection, repair or replacement of the working parts.

The valve of my invention is particularly adapted for insertion in ak pipe line 2,"thel adjacent ends of which, betweenjwhich ends the valve is inserted, are provided with flanges 3 and 4 toV which the body of the valve is secured by suitable means such as the cap screws 5.v The*v valve comprises a body having end flanges 6 and l which abut against the flanges 3 and 4 on the held in place by the cap screws 5.

flanges 6 andl, and, with such flanges, forming an open-topmlaterally open cradle-into-which the working parts of the valve may be readily' in#A to the anges 6 and l.

serted or from which they may be readily removed.. The webs or side walls 8 of the valve body are preferably arranged to provide a clear open space, equal to the internal diameter of the body, through which the working parts of the valve may be moved. The working parts of the valve comprise the cylindrical section I2 or tufbular guide which carries, by means of the webs I3, the streamlined plug I4, the plug being so shaped with respect to the passage through the cylindrical body I2, that the cross-sectional area of the Water passage remains constant so that minimum resistance is imposed to the passage of the water through the valve. The body I2 is provided with an annular recess i 5 having a bearing surface I S which is engaged by a complementary bearing surface I 'i on the sleeve I8 which is movable longitudinally into and out-of contact with the plug I4. At its other end,A the sleeve I8 has a bearing surface on the cylindrical member 2| or tubular guide which is in tight contact with the ange 5. The cylindrical member 2I is preferably formed with two bearing surfaces 22and 23 which are engaged by complementary surfaces on the sleeve I8. Between the cylindrical member 2I and the flange 25 on the sleeve I8 there is provided an annular chamber 2 6. The admission of uid under pressure into this chamlber moves the sleeve in the direction to close the valve and the release of the fluid from this chamber permits the pressure existing in the pipe line to move the sleeve in the direction to open the valve. The entrance and discharge of uid from the annular chamber 26 is controlled by the valve 21 which may be of any suitable design. Between the bearing surfaces 22 and 23 on the cylindrical member ZI and the complementary bearingfsurfaces of the sleeve I8, there are provided suitable sealing rings 3| for preventing leakage into or out of the annular chamber 26. Similarly,'a sealing ring 32 is provided between the sleeve I8 and the cylindrical member I2 The two cylindrical or tubular guide unitsr I2 and 2I form coaxial continuations of the pipe line except for a gap between them which is closed or spanned by the sleeve I8.

Means are provided for foreshortening the operative valve structure comprising the two cylindrical units I2 and 2| and the sleeve I8 to move drical member I2 is extended and the sleeve is shortened. In this construction, the cylindrical member I2 extends over beyond the center of the plug I4 and the cylindrical member 2I is modified by the provision of an annular recess 4I in which the slide 42 moves. The slide forms a bearing at 43 against the forward surface of the cylindrical member I2, and a guide plate 44 is provided for guiding and supporting the sleeve when it is extended to valve closing position. The

f annular chamber di is of suflicient depth so that the chamber 2E is provided behind the head of the sleeve and the ow of liquid into and out of this chamber controls the movement of the sleeve valve. It is understood that the water is discharged from the pipe line before the valve structure is foreshortened for the purpose of removing it from the cradle.

I claim:

1. A valve for insertion in a pipe line including a cradle adapted to be fixed in the pipe line, a iiange on each end of the cradle, a two part valve body insertable into said cradle and expansible to bring the parts respectively into tight contact with said flanges, a plug on one of said parts, and a, movable sleeve valve forming a tight sliding contact with said parts and movable into and out of engagement with said plug.

2. A valve including a cradle, a flange on each end of the cradle, a cylindrical body member engaging one flange, a cylindrical body member engaging the other flange, a plug carried by one of said body members, a sleeve valve mounted in the other body member and movable into and out of engagement with said plug and means for moving said body members relatively to each other to move them into andV out of engagement with said ilanges.

3. A valve comprising a cradle, flanges on the ends of the cradle, a cylindrical body member abuttingone flange, a plug fixed in said body member, a second cylindrical Vbody member abut- Y ting the other flange, a sleeve. bearing in said Isecond body member and movable into and out of engagement with said plug and means for relatively moving said body members in the direction of movement of the sleeve, to move said body members out of engagement with said flanges.

4. A device of the character described com-v prising: a cradle `arranged to be inserted in a pipe line; a two part casing accommodated within said cradle; means for detachably sealing the f ends of said casing in fluid tight relationship to lindrical'elements I2 and 2I axially with respect i In -the modified form of valve shown in Fig. 1,y

the construction is substantially the same as that showninlmig.v` 3 with the exception that the cylinthe ends of said cradle; anda closure membel` operatively engaging the two parts of saidl casing in iluid tight relationship therewith.

5. A device of the character described comprising: a valve cradle provided with langed ends; an extensible two part, tubular valve casing accommodated ywithin said cradle; a tubular valve closure member engaging the two parts of said valve casing in fluid tight relationship therewith; and means for extending the two parts of said valve casing into fluid tight contact with said flanged ends.

6. A valve for insertion in a pipe line comprising a cradle adapted to be xed in the pipe line, apair of tubular guides, a valve plug on one of said guides, means for forcing said guides against said cradle, and a sleeve slidable'on'said guides toward and away from a position against said l a paix-.of tubuiarguides, means forremqvably 5 mounting said tubular guides in said cradle to continue said pipe line except for a gap between the ends of said guides, a valve plug on one of said guides, and a sleeve spanning saidv gap and` slidable on said guides toward and away from abutment with said plug.

8. A valvey for insertion in a pipe line compris,-

toward and away from abutment with said plug.

9. A valve for insertion in a pipe line comprising a laterally open cradle having a pair offace surfaces and adapted to be fixed in the pipe line,

` faces, a valve plug on one of said guides, and a I sleeve coaxial with and slidable on said guides' Y 6 a pair of tubular guides adapted. to` be moved laterally into said cradle, means for mounting said guides in said cradle to serve as fluid tighty continuations of said pipe line except for a'gap y between the ends of said guides, ka sleeve spanning said gap and slidable on said guides in fluid tight relationship therewith, andl means acting with said sleeve for controlling flow through said pipe line.

IRA MORGAN WHITE.

i REFERENCES CITED The 'following references areof record in theV file 'of this patent:

VUNITED STATES PATENTS Number Name Date 301,821 Kroeg July a, 1884 2,124,331r Cray July 19, 1938 

